Flying machine



J. B. SLINN FLYING MACHINE May 13, 1930.

Filed July 23, 1928 Patented May UNITED STATES PATENT or-Flor;-

JAMES B. SLINN, O1 BONAI'ABTE, IOWA I'LYIEN'G MACHINE Application filed July 23,

My invention relates to flying machines of the ornithopter type and in the present instance illustrated as a toy but the principle is adaptable to machines of the man carrying form.

The object of the invention is to provide a flying machine having a simple but thoroughly eificient form 0 able wings f mechanism for the movthereof so arranged, constructed,

and mounted as to obtain novel action,of the said wings.

That my invention may be fully understood, the accompanying drawing is provided wherein:

my invention.

Figure 2 perspective, for the wings.

Figure 3 shows Figure 1 is a plan of the flying machine of illustrates on a larger scale, in the mechanical driving elements the rear portion or tail of the machine in perspective.

Figure 4 is a plan on a shown in Figure 1 Figure 5 is a plan of a crank-shaft, and

. Figure 6 shows larger scale of parts in perspective parts illustrated in Figure 2. The machine includes a body 1 supported on which, at its rear end and at opposite sides are tail members 13. At its forward end the body has erected upon and attached to it a standard 6 which in this instance has upwardly and outwardly divergent extenslons or arms 18 supporting a plate 9 5 the longest measu having a bearing 15 at each carries therein part of a wing-spar 10,

ing

the latter lying at lyin transverse to rement of the body 1 and end. Each bearthe leading edge of a wing 12. Said spar beyond the bearing is extend- 40 ed downwardly forming a bell-crank 16. Affixed to the plate 9 and extending rearwardly therefrom in a divergent manner is a pair of ribs 11 adapted to vibrate vertically rearward of the plate mining the said wings 12, the spars 10 at the and are of a length deterfore and aft measurement of the latter being extended from the bearings 15 back to the free ends of said ribs 11, the material of the wmgs hinging, so to spe positions named,

ak, along and between the and the rear edges of the 1928. Serial No. 294,675.

wings describe curved lines from the rear free ends of the ribs to the extremities of the spars 10. Also, the material of the wings extends between the ribs 11 and attached thereto formmg a plane 20, Figures 1 and 2.

Erected on the body 1 rearward of the standard 6 is a standard 4 forming a bearmg for a crank-shaft 8 which latter also has a bearing in a bushing 7 of the said standard 6, said shaft terminating forward of the latter in a crank 8. Between the two standards 4 and 6 the shaft 8 has two opposed cranks 3 each of which is connected by a pitman 5 in suitable manner with the free end ofone of the bell-cranks 16. The rear end. of the shaft in this instance terminates in a hook 17 to receive over it one end of a rubber band 2, the other end of the latter engaging over a similar hook 14 erected on the body 1 in the rear.

It is clear that by means of the'crank 8' the elastic member orband 2 may be placed under torsional stress which when liberated will transmit rotary movement to the shaft 5 8, 1n consequence of which the wings 12 through the cranks 3, pitman 5 and parts 16 and 10, will receive a more or less violent vertical action, both wings rising and falling at the same time due to the relation of the cranks. The springy nature of the ribs 11 coupled with the fabric composing the wings rotating about the spars 10 changing the angle of attack of the wings and plane 20, and the air is compressed between the wings on their downwardstrokes. The rear edges of the wings move upwardly on the down stroke and downwardly on the up stroke aid this action together with a slight consequent vertical movement of the plane 20, which is wider at its rear end, act as propelling adjuncts.

The more or less flexibility of the standard 6 carrying. the plane 20 permits a forward and back action during wing movement causing the latter to change the angle of attack by moving slightly forward in the down stroke and backward in the upstroke, assisting in driving the machine forward.

Changes of minor nature may be made in no ment in a fore and aft ported rear end'and free my flying machine structure without departing from the spirit of the invention or the meaning of the appended claims.

I claim:

1. A flying machine of the class described including in its construction a body portion, supporting means mounted thereon, a shafts journaled in said means and having a crank at opposite sides of the axis thereof, power means connected to the shaft, apair of wings each including a wing spar 'hingedly mounted on a art of the said supporting means, a lever rigid with the hinged portion of the wing spar, and a rod connecting each lever with one of said cranks.

2. A flying machine of the type described includin a body portion, supporting means erected t ereon near the forward end, a substantially flat vane aflixed at one end to said means and extending rearward therefrom and free to flex, wings hingedly connected to the supporting means and each hinged to a side edge of the vane, and means including a power source for operating the said wings. 3. A fiyin machine of the type described including a body portion, a .support erected thereon adapted for a sli cured at one end to the support, extending rearward therefrom and having an unsupto vibrate, a wing lngedly connected to each side edge of the vane, and power means operatively connected to the wings.

4. A flyin%machine of the type described A including a ody portion, a support erected thereon, a flexible vane having a narrow and a broad end and attached at its narrow end to the support, its broad end being unsupported rearward from the support and free to flex, a wing hingedly connected to each side edge of the vane, and power means operathe hinged edges of said wmgs. 3

5. flying machine of the type described comprising a body portion having a tail memher, a support erected on the forward end of the portion, a vane attached at one end to the support and disposed in: a horizontal plane and having a rear end free to vibrate vertically, a wing hingedly mounted at each of the two opposite side edges of the vane, a shaft supported by the body portion and having a pan of cranks opposed to each other, power means connected with the shaft, and members connecting the cranks and the hinged edges ofsaid wings. I

6. A flying machine of the type described including a body portion, an upstanding support fixed thereon and free to flex, a flexible vane attached at its forward end thereto and unsupported at its rear end, a wing-hingedly connected at each side edge of the vane, and

power means operatively connected to the source connected ht vibratory moverectlon, a vane sewing hinged to each side edge of the vane including a member rigid therewith, a shaft journaled on the support having two cranks 1n opposed positions, a connecting-rod extendmg between and connecting each crank with one of the said members, and a power to and exerting rotative action to 'said shaft.

8. A toy flying machine including in its I In testimony whereof I have signed my name to this specification.

' JAMES B. SLINN. 

